[Free] 2018(Jan) EnsurePass Testinsides Oracle 1z0-853 Dumps with VCE and PDF 241-250

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Java Standard Edition 5 Programmer Certified Professional Exam

Question No: 241 – (Topic 3)

Given:

1. public class TestOne {

2. public static void main (String[] args) throws Exception {

3. Thread.sleep(3000);

4. System.out.println(quot;sleepquot;); 5. }

   6. }

   What is the result?

   1. The code executes normally and prints quot;sleepquot;.

   2. The code executes normally, but nothing is printed.

   3. Compilation fails.

   4. An exception is thrown at runtime.

Answer: A

Question No: 242 – (Topic 3)

Given:

1. public static Iterator reverse(List list) {

2. Collections.reverse(list);

3. return list.iterator();

14. }

1. public static void main(String[] args) {

2. List list = new ArrayList();

3. list.add(quot;1quot;); list.add(quot;2quot;); list.add(quot;3quot;);

4. for (Object obj: reverse(list))

5. System.out.print(obj quot;, quot;);

20. }

What is the result?

A. 1, 2, 3,

B. 3, 2, 1,

1. The code runs with no output.

2. Compilation fails.

3. An exception is thrown at runtime.

Answer: D

Question No: 243 – (Topic 3)

Given:

1. String test = quot;This is a testquot;;

2. String[] tokens = test.split(quot;\squot;);

3. System.out.println(tokens.length); What is the result?

1. 4

2. Compilation fails.

3. 0

4. An exception is thrown at runtime.

5. 1

Answer: B

Question No: 244 – (Topic 3)

Given:

1. public static void main(String[] args) {

2. Integer i = new Integer(1) new Integer(2);

3. switch(i) {

4. case 3: System.out.println(quot;threequot;); break;

5. default: System.out.println(quot;otherquot;); break;

16. }

17. }

What is the result?

1. three

2. Compilation fails because of an error on line 12.

3. Compilation fails because of an error on line 13.

4. other

5. An exception is thrown at runtime.

6. Compilation fails because of an error on line 15.

Answer: A

Question No: 245 – (Topic 3)

Given:

1. String[] elements = { quot;forquot;, quot;teaquot;, quot;tooquot; };

2. String first = (elements.length gt; 0) ? elements[0] : null; What is the result?

   1. Compilation fails.

   2. An exception is thrown at runtime.

   3. The variable first is set to elements[0].

   4. The variable first is set to null.

   Answer: C

   Question No: 246 – (Topic 3)

   A programmer has an algorithm that requires a java.util.List that provides an efficient implementation of add(0, object), but does NOT need to support quick random access.

   What supports these requirements?

   1. java.util.ArrayList

   2. java.util.Queue

   3. java.util.LinearList

   4. java.util.LinkedList

   Answer: D

   Question No: 247 DRAG DROP – (Topic 3)

   Click the Task button.

   

   Answer:

   

   Question No: 248 – (Topic 3)

   Assuming that the serializeBanana2() and the deserializeBanana2() methods will correctly use Java serialization and given:

3. import java.io.*;

4. class Food {Food() { System.out.print(quot;1quot;); } }

5. class Fruit extends Food implements Serializable {

6. Fruit() { System.out.print(quot;2quot;); } }

7. public class Banana2 extends Fruit { int size = 42;

8. public static void main(String [] args) {

9. Banana2 b = new Banana2();

10. b.serializeBanana2(b); // assume correct serialization

11. b = b.deserializeBanana2(b); // assume correct

12. System.out.println(quot; restored quot; b.size quot; quot;); }

13. // more Banana2 methods

24. }

What is the result?

1. 1212 restored 42

2. 121 restored 42

3. 12 restored 42

4. 1 restored 42

5. Compilation fails.

6. An exception is thrown at runtime.

Answer: B

Question No: 249 – (Topic 3)

Given:

1. class Nav{

2. public enum Direction { NORTH, SOUTH, EAST, WEST }

12. }

1. public class Sprite{

2. // insert code here

15. }

Which code, inserted at line 14, allows the Sprite class to compile?

1. Nav.Direction d = Nav.Direction.NORTH;

2. Nav.Direction d = NORTH;

3. Direction d = NORTH;

4. Direction d = Direction.NORTH;

   Answer: A

   Question No: 250 – (Topic 3)

   Given:

   1. public class Boxer1{

   2. Integer i;

   3. int x;

   4. public Boxer1(int y) {

   5. x = i y;

   6. System.out.println(x); 7. }

1. public static void main(String[] args) {

2. new Boxer1(new Integer(4));

   10. }

   11. }

   What is the result?

   1. A NullPointerException occurs at runtime.

   2. The value quot;4quot; is printed at the command line.

   3. Compilation fails because of an error in line 5.

   4. A NumberFormatException occurs at runtime.

   5. Compilation fails because of an error in line 9.

   6. An IllegalStateException occurs at runtime.

Answer: A

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